ArchiveGridWhile the other resources in this list will take you to digitized material, ArchiveGrid gives researchers access to finding aids for collections. "ArchiveGrid is a collection of over three million archival material descriptions, including MARC records from WorldCat and finding aids harvested from the web. It's supported by OCLC Research as the basis for our experimentation and testing in text mining, data analysis, and discovery system applications and interfaces. Archival collections held by thousands of libraries, museums, historical societies, and archives are represented in ArchiveGrid."